Regression in >= 3.5.3 when running in python 2.7

builtin data types (and propably something else too) removed (?) after a call to setupPyFakefs() in and after 3.5.3 release with python 2.7.

Run following

from unittest import main as run_tests
import sys

class TestSuites(TestCase):
    def setUp(self):
        self.setUpPyfakefs()
    def test_foo(self):
        real_foo = False

if __name__ == '__main__':
        run_tests(failfast=False, buffer=False, catchbreak=False)

throws following error:

E
======================================================================
ERROR: test_foo (__main__.TestSuites)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test_acceptance.py", line 9, in test_foo
NameError: global name 'False' is not defined

----------------------------------------------------------------------
Ran 1 test in 0.009s

FAILED (errors=1)

Same issue doesn’t seem to effect python3 with same library version.

Darwin-18.0.0-x86_64-i386-64bit (‘Python’, ‘2.7.15 (default, Nov 27 2018, 21:40:55) \n[GCC 4.2.1 Compatible Apple LLVM 10.0.0 (clang-1000.11.45.5)]’) (‘pyfakefs’, ‘3.5.3’)

[mrbean-bremen]

Ok, thanks - I will consider this fixed then. I will probably put together a new release soon, after the other outstanding issues are resolved. Thanks for the report and the help!

[mrbean-bremen]

Yes, something like this. I had some problems with that approach, which I don’t remember right now - I wasn’t happy with the curretn solution, but it seemed to work. Also I have to check why the unit tests pass that test this behavior - they are obviously not adequate.